function formValidator(){
	// Make quick references to our fields
	var firstname = document.getElementById('firstname');
	var phone = document.getElementById('phone');
	var zip = document.getElementById('zip');
	var state = document.getElementById('state');
	var username = document.getElementById('username');
	var email = document.getElementById('email');
	
	// Check each input in the order that it appears in the form!
	if(isEmpty(firstname, "Name is required...")){
		if(isEmpty(email, "Email is required...")){
			if(isEmpty(phone, "Phone is required...")){			
			if(isAlphabet(firstname, "Please enter only letters for your name")){
				if(isNumeric(phone, "Invalid phone number")){
					if(emailValidator(email, "Please enter a valid email address")){
							return true;
														 
								}
							}
						}
					}
				}
			}
					
	return false;
	
}

function isAlphabet(elem, helperMsg){
	var alphaExp = /^[a-zA-Z]{0,30}$/;
	if(elem.value.match(alphaExp)){	
		return true;	
		}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}

function isNumeric(elem, helperMsg){
	var numericExpression = /^[0-9]+$/;
	if(elem.value.match(numericExpression)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}

function emailValidator(elem, helperMsg){
	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	if(elem.value.match(emailExp)){
	$('#formID').ajaxForm(function() { 
	$('#overlay7').slideUp('slow');
	$('#overlay8').delay(650).slideDown('slow');
}); 
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}

function isEmpty(elem, helperMsg){
	if(elem.value.length == 0){
		alert(helperMsg);
		elem.focus(); // set the focus to this input
		return false;
	}
		return true;	
}